fix(flowchart): expose pure modules as window globals for standalone window; v4.9.7

Each pure module's UMD wrapper assigned window.FlowchartXxx only in the else branch — when 'module' was undefined. But the renderer runs with nodeIntegration:true, so 'module' is always truthy and the else branch never ran. The standalone Flowchart Generator window then aborted with 'Flowchart pure modules not loaded'.

Fix: append 'if (typeof window !== undefined) window.FlowchartXxx = exported;' after the CommonJS branch in all 4 pure modules (store, shapes, mermaid, canvas). Both branches can run now; the legacy sidebar panel still loads them via require() and the renderer unconditionally exposes the global.

Regression guard: 4 new source-grep tests in tests/flowchart-controller.test.js assert each module's source contains the 'window.FlowchartXxx = exported' assignment.

Attribution: Amit Haridas

src/flowchart/flowchart-canvas.js

@@ -337,6 +337,12 @@ function createCanvas(container, store, opts = {}) {
   } else {
     root.FlowchartCanvas = exported;
   }
+  // v4.9.7 — also expose as window global when running in Electron renderer
+  // (nodeIntegration:true makes `module` truthy so the else branch above never
+  // runs; the controller still expects window.FlowchartCanvas).
+  if (typeof window !== 'undefined') {
+    window.FlowchartCanvas = exported;
+  }
 })(typeof window !== 'undefined' ? window : globalThis, function () {
   return { createCanvas, SHAPE_KINDS };
 });

src/flowchart/flowchart-mermaid.js

@@ -100,6 +100,12 @@ function toMermaid(graph) {
   } else {
     root.FlowchartMermaid = exported;
   }
+  // v4.9.7 — also expose as window global when running in Electron renderer
+  // (nodeIntegration:true makes `module` truthy so the else branch above never
+  // runs; the controller still expects window.FlowchartMermaid).
+  if (typeof window !== 'undefined') {
+    window.FlowchartMermaid = exported;
+  }
 })(typeof window !== 'undefined' ? window : globalThis, function () {
   return { toMermaid, escapeLabel, nodeDeclaration, edgeDeclaration };
 });

src/flowchart/flowchart-shapes.js

@@ -69,6 +69,12 @@ function shapeSvg(kind, x, y, width, height) {
   } else {
     root.FlowchartShapes = exported;
   }
+  // v4.9.7 — also expose as window global when running in Electron renderer
+  // (nodeIntegration:true makes `module` truthy so the else branch above never
+  // runs; the controller still expects window.FlowchartShapes).
+  if (typeof window !== 'undefined') {
+    window.FlowchartShapes = exported;
+  }
 })(typeof window !== 'undefined' ? window : globalThis, function () {
   return {
     shapeSvg,

src/flowchart/flowchart-store.js

@@ -268,6 +268,12 @@ function create(io) {
   } else {
     root.FlowchartStore = exported;
   }
+  // v4.9.7 — also expose as window global when running in Electron renderer
+  // (nodeIntegration:true makes `module` truthy so the else branch above never
+  // runs; the controller still expects window.FlowchartStore).
+  if (typeof window !== 'undefined') {
+    window.FlowchartStore = exported;
+  }
 })(typeof window !== 'undefined' ? window : globalThis, function () {
   return { create, NODE_KINDS, EDGE_KINDS };
 });